Lubrizol

Lubrizol is a smooth operator -- the company is the world's #1 maker of additives for lubricants and fuels. Its Lubrizol Additives segment includes engine oil additives that fight sludge buildup, viscosity breakdown, and component wear; fuel additives designed to control deposits and improve combustion; and additives for paints, inks, greases, metalworking, and other markets. Lubrizol's Advanced Materials segment (performance coatings and chemicals) delivers its products to the personal care and rubber and plastics markets. The company markets nearly 3,000 products in more than 100 countries. Investor Warren Buffett's Berkshire Hathaway acquired Lubrizol in 2011 for about $9.7 billion in cash.